Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh hang » thanh hoang, thanh thang, tranh hang
nhung cong » dung cong, thong cong, hang cong
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
toan cao » toan tap
toan ban » van ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sang - thanh hang va nhung cong tac ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sang - thanh hang va nhung cong tac ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sang - thanh hang va nhung cong tac ((toan cao) or (toan ban))*.